NTA Abhyas NEET2020ChemistryBiomoleculesPractice
The most abundant protein of the biosphere is found in:
Options
- AChloroplasts
- BMitochondria
- CRibosomes
- DDictyosomes
Correct answer
A. Chloroplasts
Step-by-step solution
Collagen is the most abundant protein in the animal world, and Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the most abundant protein in the whole of the biosphere. Carboxylation is the fixation of CO 2 into a stable organic intermediate. Carboxylation is the most crucial step of the Calvin cycle where CO 2 is utilised for the carboxylation of RuBP. This reaction is catalysed by the enzyme RuBP carboxylase which results in the formation of two molecules of 3-PGA. Since this enzyme also has an oxygenatio